MAIN MORAINIC SYSTEM OF THE MIAMI LOBE. 367 



and only a short piece of projecting pipe marks its position; but it is of 

 much scientific vahie in that it indicates that the supposed highest point in 

 Ohio is in a region of very heavy drift deposits, and, since it carries an 

 unusual amount of drift, owes its great height only in part to a high altitude 

 of the rock surface. 



Hartzler reports other wells in the neighborhood of Belief ontaine Avhich 

 show large amounts of drift, as follows: At Mr. Easton's, 1^- miles south of 

 Bellefontaine, a well 140 feet deep penetrated ordinary till about 120 feet, 

 then a red clay, very hard and dry, 20 feet, beneath which water-bearing 

 sand was struck, fi-om which bits of wood were pumped up. In a well on 

 Charles Scott's farm, on the hill north of West Liberty, wood was encoun- 

 tered in a red, sandy clay at a depth of 160 to 170 feet, after a thick bed of 

 blue till had been passed through. The well terminates in gravel at a depth 

 of 200 feet. Just above the water-bearing gravel there is a bed of blue 

 bowlder clay. The altitude of the well mouth is about 1,200 feet. A well 

 at Mrs. Dille's, 4 miles south of Bellefontaine, penetrated 93 feet of drift, 

 mainly gravel, and at that depth entered limestone. A well near Spring 

 Hill, on the farm of Daniel S. Corey, penetrated 390 feet of drift, the 

 greatest amount yet found by Hartzler. The following succession of beds 

 was passed through, as given from memory, but the exact thickness of 

 each bed was not remembered: 



Section of Cojvy well near Spring Hill, Ohio. 



Feet. 



Gravel, about 90 



Blue till with thin beds of assorted material 200 



Red clay (at about 320-340 feet) 20 



Blue clay 30-40 



Green and red clays resting on the rock. 



The wells in Bellefontaine made in prospecting for natural gas have 

 the following amounts of drift, as reported by Dr. Covington, of tliat city: 



Thickness of drift in Bellefontaine gas horings. 



Feet. 



Carter's well, three-fourths mile south of court-house 95 



Well on Huntsville road, 1 mile northwest of court-house 50 



Well west of railway station 150 



In the vicinity of the Ludlow survey line, at a distance of 4 or 5 miles 

 south from Bellefontaine, the rock rises to the surface in prominent portions 

 of the uplands, and it also lies near the surface just north of Bellefontaine 

 at altitudes much above the level of the railway station. 



